Bodnar, L. M., Simhan, H. N., Powers, R. W., Frank, M. P., Cooperstein, E., & Roberts, J. M. (2007). High Prevalence of Vitamin D Insufficiency in Black and White Pregnant Women Residing in the Northern United States and Their Neonates(). J Nutr.

Bodnar, Lisa M., Hyagriv N. Simhan, Robert W. Powers, Michael P. Frank, Emily Cooperstein, a James M. Roberts. "High Prevalence of Vitamin D Insufficiency in Black and White Pregnant Women Residing in the Northern United States and Their Neonates()." J Nutr 2007.

Bodnar, Lisa M., et al. "High Prevalence of Vitamin D Insufficiency in Black and White Pregnant Women Residing in the Northern United States and Their Neonates()." J Nutr 2007.